Improvement in wire-mattress frames



J. G. ,SMITH.

Woven Wire Mattress Frames.

N0. 136,271. I Q PaentedFeb.25,T873

WITNES SESI INVENTORZ icky? UNITED STATES PATENT QFFIGE.

JOHN SMITH, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN WIRE-MATTRESS FRAMES.

Specification forming part of Letters Patent No. 136,271, dated February25, 1873.

To all whom it may concern:

Be it known that I, JOHN G. SMITH, of the city and county of St. Louisand State of Missouri, have invented a certain Improvement in Woven-WireMattresses, of which the following is a specification:

This improvement relates to a means for adjusting one of the end railsof the mattress so as to increase or diminish the tension of the spiralsprings of which the body or web of the mattress is composed; and myinvention consists in the combination of the end rail or bar of themattress-frame, with metallic pieces made with flanges to clamp the endand side rails, and adjustable on the latter by means of set-screws.These adjustable pieces are slotted longitudinally to receive transversebolts, by which they are held firmly to the side rails after adjustment.

Figure 1 is an under perspective view of my improvement. Fig. 2 is aside view, showing the improvement attached to an end support in forminga bedstead.

A are portions of the side rails of the mattress-frame boredtransversely to receive the clampingbolt B, which has a nut, 11, andhead 11-. The bolts B pass through the slots 0 of the adjustable pieces0. The piece 0 has broad flanges c, which lap around the upper and loweredges of the rails A and tightly hold the same. D are set-screws, whichscrew through the ends of the pieces 0, and whose ends bear against themetallic knobs or plates 01 in the ends of the rails A. C is a bracketon the piece 0 extending upward, and so formed as to receive and tightlyhold one end of the end bar or rail E, to which bar one end of thewire-work is attached.

In elastic woven-wire mattresses it is proper that there should be somemeans of adjusting the tension to suit the pleasure of the user and itis required that there should be no rigid bar between the ends, as themattress is much used in hot weather with no other covering than asheet; and as the length of the mattress is limited by that of anordinarybedstead there is no space between the ends where a rigidadjusting device can be properly applied.

In Fig. 2 is shown the method of attaching my device to an end frame toform a bedstead. The supporting frame F is attached to the pieces 0 bybolts G, and held firmly in position by steady-lugs 9 cast upon the faceof O, a similar supporting-frame being attached to the other end of themattress.

To adjust the tension of the mattress, the nuts 12 are loosened, thescrews D turned, and the nuts I) again tightened.

I claim as my invention- I The combination of the side rails A, end baror rail E, and adjustable pieces 0 0, when the latter are provided withflanges 0, slot 0, clamping-screw B, and set-screw D, all arrangedsubstantially as and for the purpose set forth.

JOHN G. SMITH.

v Witnesses:

SAML. KNIGHT, ROBERT BURNS.

